Pachyveria plant named &#39;tsaech1805&#39;

ABSTRACT

A new and distinct x Pachyveria  plant named ‘TSAECH1805’ which is characterized by an abundance of strong, thick succulent foliage arranged in a stemless rosette, upright juvenile foliage at the center of the rosette which becomes progressively more relaxed with age, glaucous blue-gray foliage which becomes progressively darker towards the outer whorls of the rosette, foliage which is lightly suffused and margined greyed-orange towards the apex, as well as the stability of these characteristics from generation to generation.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims priority to the Community Plant Variety Rightsapplication number 2018/0704, filed Mar. 8, 2018, which is hereinincorporated by reference.

Latin name of the genus and species: The Latin name of the genus andspecies of the novel variety disclosed herein is Echeveria hybrid ‘Perlevon Nurnberg’ x Pachypythum oviferum which is also known by thenothogenus, xPachyveria.

Variety denomination: The inventive variety of xPachyveria disclosedherein has been given the variety denomination ‘TSAECH1805’.

BACKGROUND OF THE INVENTION

Parentage: ‘TSAECH1805’ is an intergeneric hybrid seedling selectionresulting from the controlled pollination of Echeveria hybrid ‘Perle vonNurnberg’ (not patented), the seed parent, with an unnamed Pachypythumoviferum plant (not patented), the pollen parent. The crossing was madeby the inventor in the spring of 2015 at a commercial greenhouse inHeerhugowaard, the Netherlands. In the summer of 2016, one seedling fromsaid cross of 2015 was observed to exhibit unique growth and foliagecharacteristics. The seedling was isolated for further evaluation inorder to confirm the distinctness and stability of the characteristicsfirst observed. In the autumn of 2016, upon confirmation of distinctnessand stability, ‘TSAECH1805’ was selected for commercialization.

Asexual Reproduction: Asexual reproduction of the new cultivar‘TSAECH1805’, by way of rooting leaf cuttings, was first initiated inthe summer of 2017 at the inventor's commercial greenhouse inHeerhugowaard, the Netherlands. Through four subsequent generations, theunique features of this cultivar have proven to be stable and true totype.

SUMMARY OF THE INVENTION

The cultivar ‘TSAECH1805’ has not been observed under all possibleenvironmental conditions. The phenotype may vary somewhat withvariations in environment such as temperature, day length, and lightintensity, without, however, any variance in genotype. The followingtraits have been repeatedly observed and are determined to be the uniquecharacteristics of ‘TSAECH1805’. These characteristics in combinationdistinguish ‘TSAECH1805’ as a new and distinct xPachyveria cultivar:

-   -   1. ‘TSAECH1805’ exhibits an abundance of succulent foliage        arranged in a stemless rosette; and    -   2. ‘TSAECH1805’ exhibits erect foliage at the center of the        rosette which becomes progressively more relaxed until the        foliage at the outer whorls of the rosette is relaxed to near        horizontal; and    -   3. ‘TSAECH1805’ exhibits strong, thick foliage with a narrowly        obovate to obovate shape; and    -   4. ‘TSAECH1805’ exhibits moderately to heavily glaucous foliage        which generally appears to be blue-gray and becoming        progressively darker towards the outer whorls of foliage; and    -   5. ‘TSAECH1805’ exhibits foliage which is lightly suffused and        margined greyed-orange towards the apex.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 illustrates, as nearly true as it is reasonably possible to makethe same in color photographs of this type, an exemplary plant of‘TSAECH1805’ grown in a commercial greenhouse in Heerhugowaard, theNetherlands. This plant is approximately 12 months old, shown planted ina 12.5 cm container.

FIG. 2 illustrates, as nearly true as it is reasonably possible to makethe same in color photographs of this type, the typical foliagearrangement of ‘TSAECH1805.

FIG. 3 illustrates, as nearly true as it is reasonably possible to makethe same in color photographs of this type, the adaxial surface of thejuvenile and mature foliage of ‘TSAECH1805’.

FIG. 4 illustrates, as nearly true as it is reasonably possible to makethe same in color photographs of this type, the abaxial surface of themature foliage of ‘TSAECH1805’.

BOTANICAL DESCRIPTION OF THE PLANT

The following observations and measurements made in December of 2018describe averages from a sample set of six specimens of 12 months old‘TSAECH1805’ plants grown in 12.5 cm nursery containers at commercialgreenhouse in Heerhugowaard, the Netherlands. Plants were produced usingconventional greenhouse production protocols for Echeveria andPachyphytum plants which consisted of minimal irrigation and fertilizerapplications, and chemical pest and disease control measures againstmealy bug and Botrytis as required. Plants were grown underapproximately 50 percent shade after propagation and later exposed tofull sun once they began to mature. No photoperiodic treatments orartificial light was given to the plants.

Those skilled in the art will appreciate that certain characteristicswill vary with older or, conversely, with younger plants. ‘TSAECH1805’has not been observed under all possible environmental conditions. Wheredimensions, sizes, colors and other characteristics are given, it is tobe understood that such characteristics are approximations or averagesset forth as accurately as practicable. The phenotype of the variety maydiffer from the descriptions set forth herein with variations inenvironmental, climatic and cultural conditions. Color notations arebased on The Royal Horticultural Society Colour Chart, The RoyalHorticultural Society, London, 2015 (sixth edition).

A botanical description of ‘TSAECH1805’ and comparisons with the parentplants and closest known comparator are provided below.

-   Plant description:    -   -   Growth habit.—Succulent perennial with foliage growing in a            stemless basal rosette.        -   Plant shape.—Flattened to flattened globular.        -   Height from soil level to top of foliar plane.—11.5 cm.        -   Plant spread.—Average of 21.6 cm.        -   Growth rate.—Moderately fast growing.        -   Plant vigor.—Moderately to highly vigorous.        -   Propagation.—Type — Leaf cuttings. Time to initiate rooting            — Approximately 21 days at 18 degrees Celsius. Crop time —            Approximately 35 weeks to produce a marketable plant in a            12.5 cm container.        -   Disease and pest resistance or susceptibility.—Neither            resistance nor susceptibility to typical Echeveria and            Pachyphytum pests and diseases has been observed.        -   Environmental tolerances.—Adapt to, at least, USDA Zones 10            to 12 and temperatures as high as 40 degrees Celsius;            moderate tolerance to rain yet drought tolerant once            established; high tolerance to wind.-   Root system:    -   -   General.—Fine, well-branched fibrous roots.-   Foliage:    -   -   Arrangement.—Rosette.        -   Division.—Simple.        -   Attachment.—Sessile.        -   Quantity.—Approximately 90 leaves per rosette.        -   Shape.—Narrow obovate to oblanceolate.        -   Dimensions.—9.5 cm long, 3.2 cm wide, and 0.9 cm thick, on            average.        -   Aspect.—Slightly concave.        -   Attitude.—Juvenile foliage at the center of the rosette is            held upright; foliage becomes progressively more relaxed            with age; mature foliage is relaxed to near horizontal.        -   Apex.—Broad acute.        -   Base.—Long cuneate.        -   Margin.—Entire; not undulated or lobed.        -   Pubescence, texture and luster of the adaxial            surface.—Glabrous, smooth, and matte; moderately to heavily            glaucous.        -   Pubescence, texture and luster of the abaxial            surface.—Glabrous, smooth, and matte; moderately to heavily            glaucous.        -   Color.—Juvenile foliage, adaxial surface — Greyed-green,            nearest to RHS 191A, and fading lighter towards the base,            nearest to a mixture of RHS 193A and 193B; the epicuticular            glaucous wax covering the leaf surface is greyed-green,            nearest to in between RHS 188A and N189C. Juvenile foliage,            abaxial surface — Greyed-green, nearest to a mixture of RHS            191A and 191B, and fading lighter towards the base, nearest            to a mixture of RHS 193A, 193B, and 193C; the epicuticular            glaucous wax covering the leaf surface is greyed-green,            nearest to in between RHS 188A and N189C. Mature foliage,            adaxial surface — Yellow-green, nearest to RHS 147A, and            fading lighter towards the base, nearest to a mixture of RHS            146C and 146D; lightly suffused and margined greyed-orange            towards the apex, nearest to RHS 176B; the epicuticular            glaucous wax covering the leaf surface is greyed-green,            nearest to in between RHS 188A and N189C. Mature foliage,            abaxial surface — Yellow-green, nearest to RHS 148B, and            fading lighter towards the base, nearest to RHS 148C;            lightly suffused and margined greyed-orange towards the            apex, nearest to RHS 176B; the epicuticular glaucous wax            covering the leaf surface is greyed-green, nearest to in            between RHS 188A and N189C.        -   Venation.—No venation is visible.        -   Petiole.—No petiole; leaves are sessile.

INFLORESCENCE

No flowering has been observed to date.

COMPARISONS WITH THE PARENT PLANT AND CLOSEST KNOWN COMPARATOR

Plants of the new cultivar ‘TSAECH1805’ differ from the seed parent,Echeveria hybrid ‘Perle von Nurnberg’ (not patented), in the followingcharacteristics described in Table 1 below.

TABLE 1 Characteristic ‘TSAECH1805’ ‘Perle von Nurnberg’ Foliage shape.Narrow obovate to Broad obovate with an oblanceolate with an apiculateapex. acute apex. Foliage Thicker and longer Thinner and shorter thandimensions. than ‘Perle von ‘TSAECH1805’. Nurnberg’. General Generallyappearing Red-purple at the center coloration to be blue-gray and of therosette and of the foliage. becoming progressively transitioning togreyed- darker towards the outer purple towards the whorls of foliage;lightly outer whorls. suffused and margined greyed-orange towards theapex.

Plants of the new cultivar ‘TSAECH1805’ differ from the pollen parent,an unnamed Pachypythum oviferum plant (not patented), in the followingcharacteristics described in Table 2 below.

TABLE 2 Characteristic ‘TSAECH1805’ Pollen parent Foliage shape. Narrowobovate to Ovoid. oblanceolate with an acute apex. Foliage Thinner andlonger than the Thicker and shorter than dimensions. pollen parent.‘TSAECH1805’. Growth habit. Stemless rosette. Foliage born on a stem.General Generally appearing to be Blue. coloration of blue-gray andbecoming the foliage. progressively darker towards the outer whorls offoliage; lightly suffused and margined greyed-orange towards the apex.

COMPARISONS WITH THE CLOSEST KNOWN COMPARATOR

Plants of the new cultivar ‘TSAECH1805’ differ from the closest knowncommercial comparator, the common form of xGraptoveria hybrid ‘Opalina’(not patented), in the following characteristics described in Table 3below.

TABLE 3 Characteristic ‘TSAECH1805’ ‘Opalina’ Foliage thickness. Thickerthan ‘Opalina’. Thinner than ‘TSAECH1805’. Foliage strength. Strongerthan ‘Opalina’. Weaker than ‘TSAECH1805’.

That which is claimed is:
 1. A new and distinct variety of xPachyveriaplant named ‘TSAECH1805’, substantially as described and illustratedherein.